:root {
    --header-image: url('images/site/header.jpg');
    --body-bg-image: url('images/site/bgtile.jpg');
    --content: #154;
}

body {
    font-family: 'Alan Sans', sans-serif;
    margin: 0;
    background-color: #111;
    background-size: 65px;
    color: #0a0a0a;
    background-image: var(--body-bg-image);
}

* {
    box-sizing: border-box;
}

#container {
    max-width: 900px;
    margin: 0 auto;
}

#container a {
    color: #238;
    font-weight: bold;
}

#header {
    width: 100%;
    background-color: #4b9;
    height: 150px;
    background-image: var(--header-image);
    background-size: 100%;
}

#navbar {
    height: 40px;
    background-color: #397;
    width: 100%;
}

#navbar ul {
    display: flex;
    padding: 0;
    margin: 0;
    list-style-type: none;
    justify-content: space-evenly;
}

#navbar li {
    padding-top: 10px;
}

#navbar li a {
    color: #238;
    font-weight: 800;
    text-decoration: none;
}

#navbar li a:hover {
    color: #22a;
    text-decoration: underline;
}

#flex {
    display: flex;
}

aside {
    background-color: #397;
    width: 200px;
    padding: 20px;
    font-size: smaller;
}

main {
    background-color: #4b9;
    flex: 1;
    padding: 20px;
    order: 2;
}

footer {
    background-color: #397;
    width: 100%;
    height: 40px;
    padding: 10px;
    text-align: center;
}

h1, h2, h3 {
    color: #238;
}

h1 {
    font-size: 25px;
}

.box {
    background-color: #386;
    border: 1px solid #265;
    padding: 5px;
}

table {
    border:2px solid;
    border-collapse:collapse;
    float:right;
    width:350px;
    margin:0px 10px 10px 10px;
}

th, td {
    border:2px solid;
    padding:5px;
}

@media only screen and (max-width: 800px) {
    #flex {
        flex-wrap: wrap;
    }

    aside {
        width: 100%;
    }

    main {
        order: 1;
    }

    #leftSidebar {
        order: 2;
    }

    #rightSidebar {
        order: 3;
    }

    #navbar ul {
        flex-wrap: wrap;
    }
}